topic Re: Can I use Leverage Plots for Ordinal (Nominal) Data? in Discussions
https://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/33231#M19811
<P>Thank you for the information. It was most helpful.</P><P> </P><P> </P>Wed, 07 Dec 2016 22:01:05 GMTAE99992016-12-07T22:01:05ZCan I use Leverage Plots for Ordinal (Nominal) Data?
https://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/31045#M19664
<P>I've noticed that you can genrate leverage plots in a DOE for Ordinal (Nominal) data, but am wondering if they are meaningful without Continuous data. Reason being is when I try to generate manually as instructed by the "Effective Leverage Plots 2" (<A href="http://predictum.libsyn.com/" target="_blank">http://predictum.libsyn.com/</A>) , I can do first part and regress the other factors against my response without the X I am trying to generate a Leverage plot for and I see the leverage plots. I save my residuals, but when I try to regress X against other (Nominal) factors, I do not get options for Standard Least Squares and Effective Leverage, only Nominal Logistic/</P><P> </P><P>Question is how does JMP generate these if I can not do using the manual method and can you use leverage plots to analyze Nominal data?</P>Thu, 01 Dec 2016 20:37:54 GMThttps://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/31045#M19664AE99992016-12-01T20:37:54ZRe: Can I use Leverage Plots for Ordinal (Nominal) Data?
https://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/33141#M19761
<P>Yes, you can use leverage plots for categorical factors. But the x-axis values are constructed differently from the ones for continuous factors. Below are the steps according to JMP Technical Support:</P>
<UL>
<LI>Fit a model with all factors and calculate the residuals for this full model;</LI>
<LI>Fit a model a model without the categorical effect of interest, and calculate the residuals for this partial model;</LI>
<LI>The values for the X axis are calculated this way: [residuals for the partial model - residuals for the full model] + mean of the response variable, Y.</LI>
</UL>
<P> Please check out the Leverage Plot Details section in the JMP documentation <A href="http://www.jmp.com/support/help/13/Leverage_Plot_Details.shtml#1502500" target="_blank">http://www.jmp.com/support/help/13/Leverage_Plot_Details.shtml#1502500</A></P>Tue, 06 Dec 2016 20:39:33 GMThttps://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/33141#M19761jiancao2016-12-06T20:39:33ZRe: Can I use Leverage Plots for Ordinal (Nominal) Data?
https://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/33231#M19811
<P>Thank you for the information. It was most helpful.</P><P> </P><P> </P>Wed, 07 Dec 2016 22:01:05 GMThttps://community.jmp.com/t5/Discussions/Can-I-use-Leverage-Plots-for-Ordinal-Nominal-Data/m-p/33231#M19811AE99992016-12-07T22:01:05Z